The Spring,helical,extension, cataloged under National Stock Number 5360-00-558-6534, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Orlando Spring Corp. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-558-6534 |
| Primary Part Number | 2558776 |
| Item Name | Spring,helical,extension |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Orlando Spring Corp |
| Status | ACTIVE |
| Spring Free Outside Diameter | 0.375 INCHES NOMINAL IN |
| Load Rating | 2.000 POUNDS MINIMUM AND 5.500 POUNDS MAXIMUM LBS |
| End Style | SHORT TWISTED HOOK BOTH ENDS |
| Design Type | CLOSED |
| Style Designator | CYLINDRICAL |
| Opening Width | 0.0625 INCHES NOMINAL BOTH ENDS IN |
| Material Document and Classification | QQ-W-470A FED SPEC SINGLE MATERIAL RESPONSE OVERALL A |
| Spring Free Length | 1.580 INCHES NOMINAL IN |
| Spring Length Under Load | 1.500 INCHES MINIMUM AND 2.375 INCHES MAXIMUM IN |
| Coil Quantity | 25 |
| Surface Treatment | CADMIUM OVERALL |
| Coil Helix Direction | RIGHT-HAND OR LEFT-HAND |
| Material | STEEL UNS K08500 OVERALL |
| Hook Radius | 0.1875 INCHES NOMINAL BOTH ENDS IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2558776 PRIMARY | Orlando Spring Corp (USA) |
| Reference | Meaning |
|---|---|
| 2558776 | 5/2 Secondary reference U.S. Government activity |
NSN 5360-00-558-6534 is a Spring,helical,extension, manufactured by Orlando Spring Corp, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-558-6534 has 1 manufacturer part number on file: 2558776 (Orlando Spring Corp).
Key specifications for 2558776: Spring Free Outside Diameter: 0.375 INCHES NOMINAL IN; Load Rating: 2.000 POUNDS MINIMUM AND 5.500 POUNDS MAXIMUM LBS; End Style: SHORT TWISTED HOOK BOTH ENDS; Design Type: CLOSED. 14 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.